1. Alarm switch: Long press the button to enter the function, short press the up button to turn on/off the alarm switch 2. Set the upper limit of temperature alarm: Press the key again to set the temperature upper limit alarm value, and press the up/down keys to adjust the alarm value 3. Set the lower limit of temperature alarm: Press the key again to set the temperature lower limit alarm value, press the up/down keys to adjust the alarm value Measurement range: -40C ~ 150C Probe length: [value not specified] Power cord length: 1.5m Instructions: Key function 1. Enter function 2. Up key: Adjust setting value increase 3. Down key: Adjust setting value decrease The order of key function is: 1. Alarm switch 2. Set the upper limit of temperature alarm 3. Set the lower limit of temperature alarm Plug Type: EU Plug, applicable in various regions Material: Plastic + Metal Color: As shown Package Contents: 1 x Pool Thermometer 1 x Probe Only the above package content, other products are not included Note: Light reflection and different displays may cause the color of the item to appear slightly different from the real thing. The measurement allowed error is +/- 1-3cm